9

CVE-2026-45405

Dokku: Arbitrary File Write via Tar Symlink Traversal in git:from-archive and certs:add

Dokku is a docker-powered PaaS. Prior to 0.38.2, the git:from-archive and certs:add commands extract user-supplied tar/zip archives into temporary directories without sanitizing member paths or preventing symlink traversal. GNU tar creates symlinks during extraction and follows them for subsequent entries, allowing an attacker to write arbitrary files anywhere writable by the dokku user — including overwriting ~/.ssh/authorized_keys to gain unrestricted shell access. This vulnerability is fixed in 0.38.2.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Dokku ≫ Dokku SwEdition- Version < 0.38.2
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.29% 0.206
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
security-advisories@github.com 9 2.3 6
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CWE-59 Improper Link Resolution Before File Access ('Link Following')

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

https://github.com/dokku/dokku/security/advisories/GHSA-j6qq-xg73-ghqg
Vendor Advisory
https://github.com/dokku/dokku/pull/8591
Patch
Issue Tracking